Gas and air reversing valve



W. G. BERGMAN.

GAS AND AIR REVERSLNG VALVE.

,wPLlcATloN EILED AUG.2. 1,920.

PatentedSept. 12, 1922.

2 SHEETS-SHEET 1.

` l' 1 i 1| Uu ff A nu l w. G. BERQMAN. l GAS AND AlR. REVERSING VALVE.

APPLICATION FILED AuG.2, i920. Y 1,428,525. 1 PtenfdSept12,-1922.

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Patente@ l2 .u

V/"ILLIAM Gr. BERGrlVIAN, OF TOLEDO, OHO.

GAS .AND AIR REVERSING VALVE.

Application filed August 2, 1920. Serial No. 400,886.

o atl LU/om @A may concern.'

lle it known that lf, lViLLrAM G. lnnoMAm a citizen of the Unite( States, and a resident Y l do hereby declare the following to be a.

full. clear, and exact description of the invention, such as will enable others 'skilled in the art to which it appertains to make and use thc same, reference being had to the accompanying drawings, and' to the characters of reference marked thereon, which form a part of this specification.

My invention has for its object to pro duce a simple and yet' efficient and air reversing valve and one which will occupy a comparatively small floor area and which may be so manipulated that it may b eused not only to reverse the direction 'of gas and air to and from sources vof supply of the gas and air and the consuming instrumentality thereof, but-also maybe so adjusted or positioned that it will permit the flow of gas directly from the source of supply to a delivering means such as a stack7 particularly, for burning out any deposits such as soot that may accumulate in the main or may accumulate in any device through which the gas may pass to and from the valve. It also has for its object to provide a reversing valve which may be manipulated with. the least loss of gas and moreover is so constructed that in the operation of the valve the movement of the air will be controlled as well as the movement of the gas and so that upon a single operation of the reversing valve, air and gas cannot commingle before they are discharged in the consuming device, such as a furnaceywhereby explosions that sometimes occur in connection with reversing valves now known in the art, are entirely prevented.

The invention also has for its object tol provide a means for keeping the air and gas reversing valve cool to preventburning and warping of the valve. l 1- The invention may be contained in constructions of different forms. To illustrate practical applications of the invention l have selected one or two constructions as examples of constructions containingythe invention andV shall describe them hereinafter. The constructions selected for purposes of illustration are shown in the accompanying` p drawings.

Figure l of the drawings illustrates a top and sectional view of one of the constructions selected. Fig. 2 illustrates a side and sectional view of the air and gas reversing valve illustrated in Fig. l. Fig. 3 is a sec tional view showing the subterranean passagewaysused in connection with the valve illustrated` in Figs.' l and 2, the showing in Fig. 3 being very much reduced. Figs. l, 5 andG illustrate diagrammatically the valve in three different positions. Fig. 7 illustrates a side view' and section of a modified con struction containing myinvention. Fig. 8 illustrates a section of apart of the valve illustrated in Fig. 7, showing the manner in which the valve is sealed. Fig. 9 illustrates a radial trough' for containing a sealing means and used in connection with thefvalve shown in Figs. l and 7.k u

l, Fig. l, isy the subterranean passageway forthe ygas that is used or consumed in'any device, such as, a furnace of any form. The

passageway l may be connected with a source of gas supply of any form, such as, a source of producer gas. As illustrated* in Fig; 8 it terminates in an upwardly extendingypassageway 2 which terminates in a central' preferably circular chamber 3 formed inthe valve 4.

The valve l is preferably formed of sheet material such as sheet iron having a plurality of chambers which communicate with each other or with subterranean passageways leading to and from, they sources `of gas and air supply and the consuming devices7 such as a furnace anda delivering means for the waste gases7 such as the stack. The valve is so constructed that these pas sageways will be connected according to the position of the valve with reference to the passageways leading to and front the source of supply and the consuming' device and the delivering means. My invention thus provides a simple means for interconnecting the different instrumentalities and reversing the directions of flow of the air and gas as may-be desired. l I

The chambers ofthe gas valve 4i are insulated from each other by any suitable means such as by the fire briclr walls 5 or other refractory material. Also in constructions containing Vmy invention l may provide air passagewayssolocated that the air will move between the walls ofthe chamber that are subject-to 'intenseheat'whereby the walls of the valve will be kept cool by the moving air. Also by my invention 1 provide means whereby the heat that will thus be absorbed by the air will be utilized in the operation of certain of the instrumentalities that are controlled by the valve. As shown in the drawings, air may be admitted through dampers or doors 6 into certain of the chambers of theair valve and be drawn between the central and outer chamber of the air valve and directed to the consuming device. rThe air will thus move around the chamber through which the hot producer gas onone side passes and the hotter waste gases loca-ted on the other' side and inasmuch as the air passing between the walls of these chambers is directed into the consuming` dcvice, such as, a. furnace, the heat is utilized in the operation of the ilfuinace. .1in the form of construction illustrated in the lig-ares, the air passes through one door 6 when the valve .is in one position and into the chamber 7 and through the annular passageway o' and into chamber 9 and then down through the bottom of the valve into the subterrain'an passageway through which the air moves to the furnace. rThe chamber 9 is also provided with a door 6 through which air may be drawn when open and directed directly down into the subterranean air passageway. The major portion of the air that passes through the subterranean portion of the air passageway passes through the door G of the chamber 7 whereby the major portion of the air is heated by passing in vicinity to the hot producer gas and the hotter waste gases of the furnace, while the door 6 of the chamber 9 is open only to such extent as may be re- `quired to supply additional air to the furnace and thus the door 6 of the chamber 9, when the valve is in the particular position shown in Fig. 1, is for the purpose of obtaining` a more refined adjustment of the air supply to the furnace. When, however, the valve is reversed and the chamber 9 takes the position that the chamber 7 occupies in the ligure shown, the doors 6 operate in a reverse manner to keep the valve cool and to adjust the air supply to the furnace.

The valve 4- is also provided with a chamber 10 which is located intermediate the chambers 7 and 9 through which the gas from the producer main or subterranean passageway 1 enters a second subterranean passageway 12 that communicates with the furnace. rIhe chamber 10 communicates with the chamber 3 which in turn communieatcs with the subterranean gas passageway 1 so that the gas flows from the subterranean passageway 1 into the subterranean passageway 12 while air passes in the manner described through the subterranean passageway 11. The passageways 11 and 12 may terminate in a checker work for preheating the gas and air particularly where the gas is to be nsedfor heating glass and steel furnaces, or the like, in the manner well known in the art. As also is well known, the checker work is heated by the waste gases that pass from the furnace and thus the gas and air will he preheated before entering the furnace. rlhe gas and air is allowed to flow a short time through the passageways 11 and 12 whereupon the direction of iiow of the gas and air on the one hand and the waste gases on the other hand are reversed so that the gas and air mores for a short time through the checker work heated by the waste gases during the preceding period, and upon reversal of the flow the gas and air is heated in the checker work which received the waste gases during the preceding period.

lVheu the valve is 'in the position illustrated in vFig. 1, the air and gas passing through t-hc passageways 1l and 12 are heated by the checker work to which the passageways 11 and 12 are connected and the waste gases pass through checker work on the other side of the furnace and into the valve through the passageways 13 and 14;. 1t rises and enters the chamber 15. The chamber 15 covers openings in the upper sides and at the ends of the passageways 133 and 1a. rlhe waste gases pass through the chamber 15 and enter the subterranean passageway 1G that connects with the stack which operates to draw the air into the chambers 7 and 9 and also cooperates to produce the movement of the gas through the chambers 3 and 10 as well as to draw the waste gases from the furnace and checker work through the subterranean passa geways 13 and 14.

During this opeiation the interior of the valve is kept cool. and the destructive effect of the exceedingly hot waste gases that pass through the chambers 15 is entirely obviated by the movement of the cooling air through the annular passageway or chamber 8 located in the central part of the valve. Also during this operation the two sets of checker work that are connected with the passageways 13 and 14 are heated by the hot waste gases and when the temperature thereof has been sufciently raised, the air and gas reversing valve is operated to direct the gas from the subterranean passageway 1 through the subterranean passageway 13 and the air through the subterranean passageway 14 to the furnace, which will direct the gas and air to the checker work which has been heated when the valve was in the position illustrated inr Fig. 1, whereby the gas and air passing through the subterranean passage- 'ays 13 and 141; will be preheatei'l by the checker work before their delivery to the furnace.

As shown diagrammatically in Figs. l and 5 the reversing valve is moved 1200 to redirect the gas and air to the checker work which has been heated during the preceding GOk period by the waste gases. A major portion or the air now enters through the door 6 or' the chamber 9 and passes rthrough the annular passageway or chamber 8 into the chamber 7 and then down into the subterranean passageway 1li, the door L6 of the chamber 7 may be closed slightly in order to regulate the amount of air vthat is directed to the checker work ci the furnace. rllhe gas lpassing from the subterranean passageway 1 and from the source olfy supply of the producer goes up through the circular chamberB and into the chamber 10. From the chamber 10 it passes down into the subterranean passageway 1?) and thence to vthe checker work and the lurnace. The waste gases on the other hand will pass up through the chamber 15 which now covers the ends ot the passageways 11 and 12 as well as the end of the passageway 16, and so that the waste gases pass up from the passagemiys 11 and 1,2 into the chamber 15 and then down into the subterranean passageway 16 on .their way tothe stack.

When the air and gas and waste gases have passed through the passageways and chamber, as described, 'for a period suflicient to raise the temperature of the checker work connected to the right side of the valve, that is, connected tothe passageways 11 and 12, the valve is again operated so as to ymake the connections as shown in` Fig'. land as heretofore described. The air and gas valve lis thus reversed at the end of each period during which the temperature of the checker work is raised to the required degree.

ln. order that the chambers may be sea-led 'from each other and from the exterior atmosphere, l have provided a circular' trough 17 and a similar concentric circular trough 16 and radiatingtroughs 19 which communicate with the concentric troughs. The lower edge of the valve 4 extends into the outer circular trough 17. Preferably, the sheet iron of which the outer wall of the valve is formed extends into the trough 17. The chamber 3 is also provided with a downwardly extending flange 2O preferably of sheet iron which extends into the inner cir-r cular trough 18. The sheet iron liange 2O con'lorn'is to the configuration ofthe lower edge oit the two chambers 3 and 10 and thus the chambers 3 and 10 are sealed from the other chambers of the valve and fromwthe eX- terior atmosphere. The chamber '8 is located above the bottom wall l5 of the valve t and thus the llange 20 also contormsto that portion of the chamber 15 located in proximity to the chamber 3 and thus the chambers 3 and 'l5 are separated by the flange 20 which extends into the trough 18. The chamber 15 is separated from the chambers 7 and 9 'by the radially extending flanges 21. f The radially extending flanges 21 and the radial portions of the liange 2O have a width less than :the circular .llange V2.2 and the circular portion of the l'lange 2O so that when the val-ve l vis lifted a short distance the radial flanges 21 and the radial portions olthe flange 20 will be lirst withdrawn from the troughs 19. Then the valve 4; is raised a short distance and sufficient for the radially extending flanges to clear the troughs 19 the valve l may `be rotated 120o by any suitable means, and so as `to bring the radially eX- tendi-ng `flanges over the radial troughs 19 which are located oy apart. This 4prevents the escape of the producer gas and the waste gases into thea-ir. kThe valve 4L is thus raised but a `very short distance y.each :time it is reversed and the gases are kept within the valve and not permitted to escape to the atmosphere. Any form of sealing material. may be placed in the troughs.

ny form ol' rmeans may be used for raising and rotating the valve 120C. l have shown conventionally, a means for raising the valve which consists of the cable 23 which is connected to a disc`2l1. The disc 24 is connected to the valve 4 Aby means of the reds 25. Then the valve is raised by means oit the cable 23 a short distance, it may bey rotated 120o by hand or automatically by any suitable means. y l

The valve may be used not onlyvfor reversing lthe direction of vthe air and' the waste gas through the checker work and the furnace, but also it may be Iused for burning out the passageway Yfor the producer gas or directly connecting the passageways that lead to-and from-the valve. The position of the valve 1in the burning out operationis illustrated diagrammatically in Fig. 6. The valve L1 may be located so as to place 'the chamber 10 directly over the end oit the subterranean passageway 16 which will directly connect the4 subterranean passageway 1 with the subterranean `passageway 16 and thus directly connect the source `of gas supply with the stack. The gas main 1 may thus be burned out by the opening of suitable ydoors to admit air which v mixing with the gas will ignite and the soot and other material deposited from the gas in the gas main may be burned outin thegmanner well known in the art.

In Fig. 7y l-have illustrated a modification of a yconstruction which is usable where the gas is preferably directed from above' into the 'top yci? the gas valve. The gas entersy the chamber I27 and -passes through an opening 28 closed by a valve member 29 that seats upon'the 'seat 30 when closed. The chamber 27fmay be surrounded by a wall 31 ot suitv able heat insulatingvor protective material such las fire brick. A cylindrical drum 32 is located around the opening `28 and is also protected by a suitable wall of refractory material. The .drum 32e-.stende into a sealing tro-ugh 33 in which its lower edge ex tends. The trough R9, is located on the top oil the valve l1- auil 'its depth Vis sul'licient to permit sealing et the edge el? the drum 32 when the valve .is in a raised or in its lowered position. lhe gas passes through the drum tr in the chamberQT and enters the chamber 3 ci the valve instead or rising; from the end oit the passageway 1 as in the form of the construction illustrated .in Fig. 1. T he gas then. .passes through the chamber Il() and into either the passageway 12 or the passageway 18 according to the position o1: the valve.

The valve may be raised and rotated b v any suitable means. ln Fig. 7 l have shown, ior purpose oll illustration, a means that may be adopted for raising and lower- .ing` the valve The drum 32 is proil.. collar SG is pro-- vided with a. track El. vided with Vinwardly exi'endingr bosses 37 in which may be mounted shafts ttor the support olE llanged wheels 38 that are so positioned as to be located on the track 35. The collar 36 may thus be rotated about the drum 32, the wheels 88 rotating, on the track To the bosses may be secured pulleys 39 on which the cables 40 may be located. Each cable 40 is connected to the valve 34 at one end and to an annular counter-.weight 41:1 at the other end. This provides a means for balancing the valve Sil whereby it may be easily raised by hand and also it provides a means whereby the valve 34 may be rotated the required num.- ber of degrees by hand in order to place the valve in its different positions to produce reversal of the gases or to connect the main oit the producer gas directly with the stack.

claim:

1. ln an air and gas reversing* valve having gas and waste ,(as chambers,means 'for direc-ting' air through the valve to cool the walls ot the chambers.

2. ln an air and gas reversing' valve having gas and waste gas chambers, means for iilirectingg, air through the valve to cool the walls oit the chambers, and means for reversing; the flow of tie air through the valve.

3. In an air and gas reversing valve, a valve member having a `gas chamber and a waste chamber, and an air passageway located between the lgras and waste gas chambers for d irectine air between the chambers.

4l. In au air and gras reversing valve, a

val vc member having an air chamber and a gras chamber, and means for directing' air around the `njas chamber to the air chamber for cooling,T the ywall oli the njas chamber.

5. ln an air and gas reversing` valve, a

valve member havingr an air chamber, a gas4 chamber and a waste gas chamber, means for directing; air between the gas chamber and the waste chamber to the air chamber. f

G. ln an air and lens reversingr valve, a valve member having; partitioning' walls forming an air chamber, a gas chamber and waste chamber, the air chamber being defined by walls that Jform also walls of the gas and waste gas chambers.

i'. ln an air and gas reversing valve, a valve member having an air chamber, a Lgas chamber and a waste gas chamber, the air chamber partly surrounding the gas chamber and being located between the gas chamber and the waste gas chamber.

El. ln an air and gas reversing valve, ai valve member having partitioning` walls forming a gas chamber and an air chamber separated by a common wall, the air chamber partly surrounding the gas chamber,

and air and ILe'as passages 'for directing` the air heated by contact with the wall oli the chamber and the gas 'from the .f'alve.

9. ln an air and gras reversingvalve, a valve member having' partitioning walls forming' a. `gas chamber, a waste gas chamber and an air chamber defined by walls that form also walls ot the gas chamber and the waste gas chamber, and air and Agas passageways for directingthe air and gas from the valve. y

10. ln an air and gas reversing valve, a valve member having,` a gas chamber and an air chamber surrounding the gas chamber and a waste gas chamber Apartly surrounding the air chamber, and means for directing the air and from the valve.

11. ln an air and `gas reversing' valve, a valve member havingv a central gas chamber and air and waste gas chambers partly sursurroundine` the central chamber.

ln an air and gas reversing, valve, a valve member having a central gas chamber and air and waste gas chambers partly snrrounding the central chamber, the air chamber being located between the central gas chamber and the waste gas chamber.

13. In an air and gas reversing,` valve, a valve member havinp a central gas chamber, an air chamber and a waste gas chamber each partly surrounding the central chamber, an inlet gas passageway for directing` gas to the central chamber, the inlet port ot' the gas passageway beingr located in alignment withthe vertical axis olf the central chamber.

1li. 1n an air and gras reversing valve, a valve member having` partitioning walls forming); a pair ot air chambers and a. gras chamber, the air chambers being separated by the gas chamber and two ot the walls oli theejas chamber being' also walls ot the air chambers and a pair of exit gas passageways separated by the width ot'an air chamber.

15. In an air and gas reversing valve, a valve member having partitioning walls forming' a pair et air chambers and a pair oi' gas chambers, the walls of the air chambers also forming the walls of the gas chambers, the valve member having a pair of gas outlets separated from each other by substantially the width of one of the air chambers.

16. In an air and gas reversing valve, a substantially cylindrical valve chamber, a central substantially cylindrical gas chamber, a pair of concentric sealing troughs for sealing the edges ot the valve and ot the central chamber.

17. ln an air and gas reversing valve, a substantially cylindrical valve member having a substantially cylindrical central gas chamber, air and waste gas chambers partly surrounding the central chamber and separated by radiating walls, a pair oi? concentric sealing troughs for sealing the edges or' the valve member and or the central cylindrical chamber, radiating troughs connecting the concentric troughs for sealing the lower edges 0i the radiating walls of the sector shaped chambers.

18. ln an air and gas reversing valve, a substantially cylindrical valve member having a substantially cylindrical central gas chamber, air and waste gas chambers partly surrounding the central chamber and separated by radiating walls, a pair of concentric sealing troughs lor sealing the edges of the valve member and of the central cylindrical chamber, radiating troughs connecting the concentric troughs for sealing the lower edges oi? the radiating walls of the sector shaped chambers, the edges of the valve and the central chamber extending below the edges of the radiating walls of the sector shaped chamber.

19. ln an air and gas reversing valve, a gas inlet passageway and a gas outlet passageway, a pair of passageways located on each side of the iirst two named passageways, the valve having` a gas chamber :For connecting the gas inlet passageway with the gas outlet passageway and having means for closing the said pairs ot passageways.

20. ln. an air and gas reversing valve, a valve member having partitioning walls forming a pair of air chambers, a gas chamber and a waste gas chamber, the gas chamber formed by walls ot the air chambers, the gas chamber having a width substantially the same as each of the air chambers, the waste gas chamber having a width substantially the same as the total of the air and gas chambers, two of the walls of the waste gas chamber being also walls oi the air chambers, a gas inlet passageway and a waste gas outlet passageway, tour additional passageways, the waste gas chamber connecting two oi the said tour passageways with the waste gas outlet passageway, and the air chambers ior connecting one of the four passageways with atmospheric air and the gas chamber for connecting the gas inlet passageway with the remaining of the iour passageways.

21. ln a circular rotatable air and gas reversing valve, a valve member having a central gas chamber, a portion thereof extending substantially radially, an air chamber extending around and having portions thereof located on opposite sides of the gas chamber, a waste gas chamber and tour passageways arranged-in pairs, a gas inlet passageway and a gas outlet passageway, the waste gas chamber being adapted to connect either pair of the tour passageways with the gas outlet passageway and the gas chamber for connecting the gas inlet passageway with one of the remaining pair of the said four passageways and an air chamber for connecting the atmospheric air with the remaining of the four passageways.

22. In an air and gas reversing valve, a gas inlet passageway and a gas outlet passageway, a pair oi' passageways located on each side ot the first two named passageways, the valve chamber having a gas chamber for connecting the gas inlet passageway with one of the four last named passageways, and a pair of connected air chambers,

the walls ci one of the chambers having n means ior connecting the last named air chamber directly with the atmosphere, the other of the air chambers for connecting another of the four last named passageways with the iirst named air chamber, and a waste gas chamber for connecting the remaining two of the four passageways with the gas outlet passageway, the connection Lbetween the air chambers being located between the gas chamber and the waste gas chamber.

23. ln an air and gas reversing valve, a valve member having partitioning walls forming a pair of air chambers and a gas chamber, two of the walls of the gas chamber being common with two of the walls of the air chambers.

In testimony whereof l have hereunto signed my name to this specification.

xVIliLlAlil Uf. BERGMAN. 

